900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




  Richtek Technology Electronic Components Datasheet  

RT8011A Datasheet

Synchronous Step-Down Regulator

No Preview Available !

RT8011/A
2A, 4MHz, Synchronous Step-Down Regulator
General Description
The RT8011/A is a high efficiency synchronous, step-down
DC/DC converter. Its input voltage range is from 2.6V to
5.5V and provides an adjustable regulated output voltage
from 0.8V to 5V while delivering up to 2A of output current.
The internal synchronous low on-resistance power
www.DataShseweitt4cUh.ecosmincrease efficiency and eliminate the need for
an external Schottky diode. Switching frequency is set
by an external resistor or can be synchronized to an
external clock. 100% duty cycle provides low dropout
operation extending battery life in portable systems.
Current mode operation with external compensation
allows the transient response to be optimized over a wide
range of loads and output capacitors.
RT8011/A operation in forced continuous PWM Mode which
minimizes ripple voltage and reduces the noise and RF
interference.
100% duty cycle in Low Dropout Operation further
maximize battery life.
Ordering Information
RT8011/A
Package Type
F : MSOP-10 (RT8011)
QW : WDFN-10L 3x3 (RT8011)
QW : WDFN-8E 3x3 (RT8011A)
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Without SYNC and PGOOD Function
With SYNC and PGOOD Function
Note :
RichTek Pb-free and Green products are :
`RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
`Suitable for use in SnPb or Pb-free soldering processes.
`100% matte tin (Sn) plating.
Features
z High Efficiency : Up to 95%
z Low RDS(ON) Internal Switches : 110mΩ
z Programmable Frequency : 300kHz to 4MHz
z No Schottky Diode Required
z 0.8V Reference Allows Low Output Voltage
z Forced Continuous Mode Operation
z Low Dropout Operation : 100% Duty Cycle
z Synchronizable Switching Frequency (For RT8011
Only)
z Power Good Output Voltage Monitor (For RT8011
Only)
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Portable Instruments
z Battery-Powered Equipment
z Notebook Computers
z Distributed Power Systems
z IP Phones
z Digital Cameras
Pin Configurations
(TOP VIEW)
SHDN/RT
SYNC
GND
LX
PGND
10
29
38
47
56
MSOP-10
COMP
FB
PGOOD
VDD
PVDD
SHDN/RT 1
SYNC 2
GND 3
LX 4
PGND 5
10 COMP
9 FB
8 PGOOD
7 VDD
PVDD
SHDN/RT 1
GND 2
LX 3
PGND 4
8 COMP
7 FB
6 VDD
5 PVDD
WDFN-10L 3x3
WDFN-8E 3x3
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
DS8011/A-00 August 2006
www.richtek.com
1


  Richtek Technology Electronic Components Datasheet  

RT8011A Datasheet

Synchronous Step-Down Regulator

No Preview Available !

RT8011/A
Typical Application Circuit
VIN
2.6V to 5.5V
ROSC
332k
RT8011
1 SHDN/RT
10
COMP
2 SYNC
9
FB
3 GND
4
LX
5 PGND
PGOOD 8
VDD 7
6
PVDD
www.DataSheet4U.com
L1
2.2uH
RCOMP
13k
CCOMP
1000pF
RPGOOD
100k
R2 240k
CIN
R1
510k
22uF
C1
22pF
COUT
22uF
VOUT
2.5V/2A
Figure 1. Typical Application Circuit for RT8011
VIN
2.6V to 5.5V
ROSC
332k
RT8011A
1 SHDN/RT COMP 8
2 GND
3
LX
7
FB
6
VDD
4 PGND
PVDD 5
L1
2.2uH
RCOMP
13k
CCOMP
1000pF
R2 240k
CIN
22uF
R1
510k
COUT
22uF
VOUT
2.5V/2A
Figure 2. Typical Application Circuit for RT8011A
Note : Using all Ceramic Capacitors
Table 1
Component Supplier Series Inductance (uH)
TAIYO YUDEN
Sumida
GOTREND
ABC
NR 4018
CDRH4D28
GTSD53
SR0403
2.2
2.2
2.2
2.2
DCR (m)
60
31.3
29
47
Current Rating (mA) Dimensions (mm)
2700
4x4x1.8
2040
4.5x4.5x3
2410
5x5x2.8
2600
4.5x4x3.2
Table 2
Component Supplier
TDK
TDK
TDK
Panasonic
Panasonic
Panasonic
TAIYO YUDEN
TAIYO YUDEN
TAIYO YUDEN
Part No.
C3225X5R0J226M
C3225X5R0J226M
C2012X5R0J106M
ECJ4YB0J226M
ECJ4YB1A226M
ECJ4YB1A106M
LMK325BJ226ML
JMK316BJ226ML
JMK212BJ106ML
Capacitance (uF)
22
22
10
22
22
10
22
22
10
Case Size
1210
1210
0805
1210
1210
1210
1210
1206
0805
www.richtek.com
2
DS8011/A-00 August 2006


Part Number RT8011A
Description Synchronous Step-Down Regulator
Maker Richtek
PDF Download

RT8011A Datasheet PDF






Similar Datasheet

1 RT8011 Synchronous Step-Down Regulator
Richtek
2 RT8011A Synchronous Step-Down Regulator
Richtek





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy